DEBT - Additional Information (Details) - Hercules and Silicon Valley Bank [Member] - USD ($)			9 Months Ended	12 Months Ended
	Jun. 01, 2022	Aug. 12, 2021	Sep. 30, 2020	Dec. 31, 2021	Jun. 30, 2021
Debt Instrument [Line Items]
Maximum borrowing capacity under term loan			$ 75,000,000
Principal amount outstanding under term loan				$ 50,000,000
Description of maturity date terms for term loan			The Term Loan matures on October 1, 2024, or the Loan Maturity Date, and may be extended up to an additional 12 months upon the achievement of certain clinical, regulatory and financial milestones.
Term loan interest rate description				The Term Loan bears interest at a floating rate per annum equal to the greater of either (i) 9.0% or (ii) 9.0% plus the prime rate as reported in The Wall Street Journal (3.25% as of December 31, 2021) less 3.25%.
Term loan maturity date			Oct. 01, 2024
Percentage added to prime rate for debt instrument interest rate			9.00%
Interest only period payment term description			Upon the achievement of certain clinical milestones, the interest-only period was extended for an additional six months until May 1, 2023. Upon the achievement of certain regulatory and financial milestones, the interest-only period may be extended for another six months until November 1, 2023
End of term charge for loan, percentage			6.55%
Minimum amount of prepayment allowed under debt instrument			$ 5,000,000
Prepayment charge (as a percentage)			1.50%
Description of term loan payment terms			At our option, upon at least five business days’ prior written notice to Hercules, we may prepay all or any portion greater than or equal to $5,000,000 of the outstanding loan by paying the entire principal balance (or portion thereof) and all accrued and unpaid interest. Such prepayment is subject to a prepayment charge of 1.5% of the prepayment amount, if the prepayment is made in any of the first 36 months following the Closing Date. Thereafter, any prepayment is not subject to a prepayment charge.
Debt covenant minimum cash balance			$ 25,000,000
Debt covenant minimum cash balance upon licensing transaction		$ 35,000,000	30,000,000
Debt covenant minimum cash balance upon regulatory milestone achievement			$ 20,000,000
Additional percentage of interest on past due amounts			5.00%
Carrying value of term loan, net				$ 49,830,000
Unamortized debt discount and issuance costs				863,000
Accrued end of term charge				693,000
Scenario Forecast [Member]
Debt Instrument [Line Items]
Debt covenant minimum cash balance	$ 30,000,000
Tranche A [Member]
Debt Instrument [Line Items]
Maximum borrowing capacity under term loan			$ 35,000,000
Principal amount outstanding under term loan			$ 25,000,000		$ 10,000,000
Minimum interest rate (as a percentage)			9.00%
Tranche B [Member]
Debt Instrument [Line Items]
Maximum borrowing capacity under term loan			$ 15,000,000
Principal amount outstanding under term loan				$ 15,000,000
Minimum interest rate (as a percentage)			9.00%
Tranche C [Member]
Debt Instrument [Line Items]
Maximum borrowing capacity under term loan			$ 25,000,000
Expiration date to borrow under a tranche for a debt instrument			Dec. 31, 2022